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エレベーターの耐用年数には何が影響しますか？

Ask Time: 2024-01-22

Answer

設計の品質、使用法、環境、設置、メンテナンス、近代化、スペアパーツの入手可能性、およびコードの変更はすべて、耐用年数に影響します。

Answer Time: 2024-01-22

Derived Questions

No derived questions